Uber said its users could sign up from Monday for a chance to ride ?in London’s first robotaxis as soon as regulators give the go-ahead for launch, which it expects ?in the coming months. The self-driving vehicles will use artificial intelligence technology developed by British startup Wayve to navigate London’s streets. Initially, however, trained safety operators will remain behind the wheel to monitor the system and intervene if necessary. Robotaxi services are already operating in several cities across the United States, including San Francisco, Phoenix, and Los Angeles, as well as in China. Europe has been slower to adopt the…